scholarly journals A Study on Mechanical and Tribological Properties of Aluminum 7075 MMCS Reinforced with Silicon Carbide and Coconut Husk by Powder Metallurgy Process

2021 ◽  
Vol 7 (09) ◽  
pp. 84-90
Author(s):  
Syed Gous Pasha and B.S Motgi
Keyword(s):  
Silicon Carbide ◽  
Wear Properties ◽  
Mechanical And Tribological Properties ◽  
Coconut Husk ◽  
Powder Metallurgy Process ◽  
Al 7075 ◽  
New Material ◽  
Aluminum 7075 ◽  
Aluminum Alloy 7075 ◽  
Metallurgy Process

The metal matrix composite strengthened with ceramic material of silicon carbide has smart mechanical characteristics. Metal-based composites, however, demand progress in their friction and tribological characteristics. In this work-study an effort is made to design a completely new material through the method of metallurgy by adding Coconut husk. This study explored the effect of coconut husk on the tribological behavior of hybrid composite Al 7075/5 wt. % Sic/Xwt. %coconut husk(X=6,4 and0).The research confirms the performance of wear properties by incorporating coconut husk into the composite. The sic-coconut husk reinforced Al 7075 (aluminum alloy 7075) was studied. Metallurgy route was used to prepare the composites. Microstructures, the mixture of materials, wear and wear resistance properties were analyzed by optical micro cope and scanning electron microscope.

scholarly journals Investigation of graphite effect on the mechanical and tribological properties of Al 7075-SiC-graphite hybrid metal matrix composites

2020 ◽  
Vol 37 (1−2) ◽  
Author(s):  
SRIDHAR ATLA ◽  
Prasanna Lakshmi Kaujala
Keyword(s):  
Silicon Carbide ◽  
Powder Metallurgy ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Ceramic Composites ◽  
Wear Behaviour ◽  
Wear Loss ◽  
Mechanical And Tribological Properties ◽  
Al 7075 ◽  
Pin On Disc

The aluminium metal matrix composite reinforced with ceramic material of Silicon carbide (SiC) has good mechanical properties. However, aluminium based ceramic composites require improvements in their lubrication and tribological properties. In this study an attempt is made in the development of a new material through powder metallurgy technique by the addition of Graphite, which acts as a solid lubricant. This work investigated the influence of graphite on the wear behaviour of Al 7075/SiC /X wt.% graphite(X=0, 5 and 10) hybrid composite. The investigation reveals the effectiveness of incorporation of graphite in the composite for gaining wear reduction. The Al 7075 (aluminium alloy 7075) reinforced with SiC –graphite were investigated. The composites were fabricated using powder metallurgy route. The microstructures, material combination, wear and friction properties were analysed by scanning electron microscopy, XRD, and pin-on-disc wear tester. The newly developed aluminium composite has significant improvements in tribological properties with a combination of 5% Silicon carbide (SiC) and 5% Graphite. The test reveals that sliding distance of 1000 m and sliding speed of 1.5 m/s with applied load of 5 N result in minimum wear loss of 0.01062g and coefficient of friction as 0.1278.

Effects of Sintering Temperature on Microstructure and Wear Properties of Al2O3 Particle Reinforced Al Composites

2015 ◽  
Vol 1095 ◽  
pp. 16-19
Author(s):  
Tian Guo Wang ◽  
Qun Qin ◽  
Qi Chao Liang
Keyword(s):  
Sintering Temperature ◽  
Interfacial Bonding ◽  
Tribological Characteristic ◽  
Wear Properties ◽  
High Relative Density ◽  
Powder Metallurgy Process ◽  
Higher Temperature ◽  
Strong Interfacial Bonding ◽  
Metallurgy Process ◽  
Poor Interfacial Bonding

Al2O3 particle reinforced aluminum composites were prepared by powder metallurgy process. The effects of sintering temperature on microstructure and tribological characteristic were investigated with the combination of experimental results and theoretical analysis. The composite sintered at 550 oC shows high relative density and strong interfacial bonding, whereas the composites sintered at lower and higher temperature indicate no interfacial bonding and poor interfacial bonding, respectively. The surface morphology observed by scanning electron microscopy (SEM) indicated that the grains of the Al-based composites sintered at 550 oC were uniform and compact, which were in agreement with the properties of high density and tribological properties.

Mechanical Behaviour of Silicon Carbide-Fly Ash Hybrid Aluminium Alloy Composites Subjected to Age Hardening

2019 ◽  
Vol 11 (2) ◽  
Author(s):  
S. Muthukumar
Keyword(s):  
Silicon Carbide ◽  
Tensile Strength ◽  
Fly Ash ◽  
Aluminium Alloy ◽  
Metal Matrix ◽  
Age Hardening ◽  
Matrix Composites ◽  
Powder Metallurgy Process ◽  
Automobile Components ◽  
Metallurgy Process

Identification of age hardening behaviour for silicon carbide (SiC) and fly ash reinforced metal matrix composites (MMC) is required for aluminium based automobile components. The project deals with the fabrication of Aluminium Alloy 6061 metal matrix composite and characterize their mechanical properties such as hardness and tensile strength. In the present study a modest attempt has been made to test aluminium based silicon carbide and fly ash particulate MMC Age hardening behaviour of this MMC that was developed from blending, through powder metallurgy process is analysed. T6 heat treatment on AA6061/7.5% wt.of fly ash/15% wt. of silicon carbide made 20% increase in the hardness and by 18% increase in the ultimate tensile strength while 4% of ductility reduced.

The Current-Carrying Tribological Properties of Cu/Graphene Composites

2021 ◽  
Vol 143 (10) ◽  
Author(s):  
Jing Zhao ◽  
Yitian Peng ◽  
Qianguang Zhou ◽  
Kun Zou
Keyword(s):  
Tribological Properties ◽  
Applied Load ◽  
Friction Reduction ◽  
Wear Properties ◽  
Electrical Stability ◽  
Low Friction ◽  
Sliding Speed ◽  
Contact Stability ◽  
Powder Metallurgy Process ◽  
Metallurgy Process

Abstract Excellent current-carrying tribological properties including the low-friction, high anti-wear, high current-carrying efficiency, and stability are important for the current-carrying application in transmitting electrical signals and power. Here, the Cu/graphene composites with graphene uniformly distributed in Cu matrix were successfully prepared by combining the electroless plating process and powder metallurgy process. The current-carrying tribological properties including friction, wear, and electrical stability of the Cu/graphene composites with brass pairs were investigated by varying normal applied load and sliding speed under multiple applied voltages. The friction reduction and anti-wear properties of Cu/graphene composites were enhanced by the introduction of graphene. The friction coefficient of the Cu/graphene composites keeps stable under current-carrying and non-current-carrying conditions due to the benefit of the graphene enhancement to Cu. The graphene on wear surface reduces friction force and wear. The current-carrying efficiency and stability increased with the increase of applied load but decreased with increasing sliding speed. The contact stability increased with applied load, while high sliding speed caused the drastic vibration of sliding contact. The studies can provide a beneficial guideline for the current-carrying applications of Cu/graphene composites to reduce the friction and wear.

scholarly journals Mechanical and tribological properties of Al 7075 /SiC/ Graphite hybrid composites processed by powder metallurgy technique

2019 ◽  
Vol 8 (11) ◽  
pp. 1210-1215
Keyword(s):  
Tribological Properties ◽  
Hybrid Composites ◽  
Experimental Investigations ◽  
Wear Loss ◽  
Metal Composite ◽  
Tribological Behaviour ◽  
Wear Properties ◽  
Mechanical And Tribological Properties ◽  
Al 7075 ◽  
Pin On Disc

The metal matrix composite strengthened with ceramic material of carbide (SiC) has smart mechanical characteristics. Metal-based composites, however, demand progress in their friction and tribological characteristics. In this work-study an effort is made to design a completely new material through the method of metallurgy by adding graphite, which acts as a solid lubricant. This study explored the effect of graphite on the tribological behaviour of hybrid composite Al 7075/5 wt. % SiC / X wt. % graphite (X=10, 5 and 0). The research confirms the performance of wear properties by incorporating graphite into the composite. The sic-graphite reinforced Al 7075 (aluminium alloy 7075) was studied. Metallurgy route was used to prepare the composites. Microstructures, the mixture of materials, wear and wear resistance properties were analyzed by optical micro cope and scanning electron microscope, XRD, and pin-on-disc apparatus. The freshly developed metal composite has significant improvement in tribological properties with a mixture 5% silicon carbide (SiC) and 5% graphite. The experimental investigations confirm that a sliding distance of one thousand meters and a sliding velocity of 1.5 m / s with an applied load of 5 N leads to minimum wear loss of 0.01062g and coefficient of friction as 0.1278

scholarly journals Investigation of Microstructure and Mechanical Properties of Hybrid Composite Aluminum 7075 Reinforced with Sugar Cane Husk Ash (SCHA) and Silicon Carbide (SiC) by Powder Metallurgy

2021 ◽  
Vol 7 (09) ◽  
pp. 102-109
Author(s):  
Mallikarjun Nagagonda and B.S Motgi
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Compressive Strength ◽  
Powder Metallurgy ◽  
Sugar Cane ◽  
Structural Behavior ◽  
Weight Percentage ◽  
Al 7075 ◽  
Aluminum 7075 ◽  
Powder Metallurgy Route

This paper deals with the fabrication of Al-7075 composites manufactured by powder metallurgy route reinforced with different weight percentages of Sugar Cane Husk Ash (SCHA) and Silicon Carbide (SiC) A low pressure of 400 MPa was applied for compacting the composites and sintered at a temperature of 720oC for three hour. SEM and EDX analysis was done to study the micro-structural behavior. Hardness and compression test were carried out. The hardness has been improved by adding the weight percentage of Silicon Carbide (SiC) but seems to be crash by adding the weight percentage of Sugar Cane Husk Ash (SCHA). The compressive strength was found to be varying.

CARPENTER CTS-204P ALLOY (MICRO MELT 20-4)

Alloy Digest ◽  
2010 ◽  
Vol 59 (1) ◽  
Keyword(s):  
Wear Resistance ◽  
Volume Fraction ◽  
Cold Work ◽  
Heat Treating ◽  
Corrosion And Wear ◽  
Corrosion Resistant ◽  
Die Steel ◽  
Powder Metallurgy Process ◽  
Wear And Corrosion ◽  
Metallurgy Process

Abstract Carpenter CTS-204P (Micro Melt 20-4) alloy is a highly wear- and corrosion-resistant, air-hardening martensitic cold-work stainless die steel produced using Carpenter’s Micro-Melt powder metallurgy process. The excellent wear resistance of the alloy is provided by a significant volume fraction of hard vanadium-rich carbides, while the outstanding corrosion resistance of the alloy is obtained as a result of the chromium-rich matrix. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on corrosion and wear resistance as well as forming, heat treating, and machining. Filing Code: SS-1051. Producer or source: Carpenter Specialty Alloys.

scholarly journals Optimisation of Mechanical Properties of Gradient Zr–C Coatings

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 296
Author(s):  
Łukasz Szparaga ◽  
Przemysław Bartosik ◽  
Adam Gilewicz ◽  
Katarzyna Mydłowska ◽  
Jerzy Ratajski
Keyword(s):  
Adhesive Layer ◽  
Scratch Test ◽  
Deposition Process ◽  
Functionally Graded ◽  
Wear Properties ◽  
Mechanical And Tribological Properties ◽  
High Adhesion ◽  
Graded Material ◽  
Residual Stresses And Strains ◽  
Optimisation Procedure

One of the key components of the designing procedure of a structure of hard anti-wear coatings deposited via Physical Vapour Deposition (PVD) is the analysis of the stress and strain distributions in the substrate/coating systems, initiated during the deposition process and by external mechanical loads. Knowledge of residual stress development is crucial due to their significant influence on the mechanical and tribological properties of such layer systems. The main goal of the work is to find the optimal functionally graded material (FGM) coating’s structure, composed of three functional layers: (1) adhesive layer, providing high adhesion of the coating to the substrate, (2) gradient load support and crack deflection layer, improving hardness and enhancing fracture toughness, (3) wear-resistant top layer, reducing wear. In the optimisation procedure of the coating’s structure, seven decision criteria basing on the state of residual stresses and strains in the substrate/coating system were proposed. Using finite element simulations and postulated criteria, the thickness and composition gradients of the transition layer in FGM coating were determined. In order to verify the proposed optimisation procedure, Zr-C coatings with different spatial distribution of carbon concentration were produced by the Reactive Magnetron Sputtering PVD (RMS PVD) method and their anti-wear properties were assessed by scratch test and ball-on-disc tribological test.

Sign in / Sign up

Export Citation Format

Share Document